The cost of renting a home in Los Angeles and Orange counties jumped 2 percent in June from the year before, the biggest percentage increase since June of 2009, the Consumer Price Index shows.

Rents have been going up on an annual basis for 22 consecutive months, increasing 3.3 percent since rent inflation resumed in August of 2010.

Compared to five years ago, the average L.A.-O.C. rent has increased 9.9 percent, the CPI shows. And it’s up nearly 47 percent over the past 10 years.

For the first six months of 2012 as a whole, rents have increased 1.6 percent.

According to the Bureau of Labor Statistics, other shelter costs for June include:

A 1.9 percent increase in the equivalent cost to homeowners to live in their homes. That is, there was a 1.9 percent increase in the amount homeowners would have paid to rent their homes or would have earned if their homes were rented out.

A 1.8 percent increase in fuel and utilities costs, the first increase in five months. But for the first half of the year, fuel and utilities costs were down 0.6 percent compared to the year before.

A 4.6 percent increase in the cost of electricity. But residents were paying, on average, 0.1 percent less for juice from January through June compared to the year before.

A 12.7 percent decrease in the cost of gas service. Gas was down 13 percent in the first half of the year overall.

A 0.1 percent decrease in the cost of household furnishings. Furnishing costs fell 0.4 percent in the first half of the year overall.

For more than a decade, Jeff Collins has followed housing and real estate, covering market booms and busts and all aspects of the real estate industry. He has been tracking rents and home prices, and has explored solutions to critical problems such as Southern California’s housing shortage and affordability crisis. Before joining the Orange County Register in 1990, he covered a wide range of topics for daily newspapers in Kansas, El Paso and Dallas. A Southern California native, he studied at UC Santa Barbara and UC Irvine. He later earned a master’s degree from the USC School of Journalism.